The color of stool after purging may be yellow or watery, which needs to be distinguished according to the relevant reasons. 1. Yellow color: If the bowel cleansing is not complete, yellow liquid may come out, in this case, you have to keep clearing the bowel until the water becomes clear. However, if the color of the stool does not change, it is considered to be due to inflammation of the digestive system, such as enteritis, gastritis, etc. 2. Clear water: it is a normal performance, which means that the current bowel cleansing is more thorough, and it is feasible to have enteroscopy only after clearing the bowel with clear water, otherwise it will affect the diagnostic results of enteroscopy. If the bowel cleansing found that the feces has been yellow, it is not recommended to immediately perform colonoscopy, should be under the guidance of the physician to carry out the relevant examination and clear diagnosis. The preparation of bowel cleansing before colonoscopy is recommended to follow the advice of professional physicians.